A randomized trial of elective stenting after balloon recanalization of chronic total occlusions
Martin Höher, MD*,
Jochen Wöhrle, MD*,
Olaf C. Grebe*,
Matthias Kochs, MD*,
Hans-H. Osterhues, MD*,
Vinzenz Hombach, MD* and
Arnd B. Buchwald, MD
* Department of Cardiology, University of Ulm, Ulm, Germany
Department of Cardiology, University of Göttingen, Göttingen, Germany
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Figure 1 Elective implantation of the Wiktor stent after successful recanalization reduced both restenosis and reocclusion rate.
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Figure 2 MLD and RD analyzed according to treatment. Stenting resulted in a significant improvement of acute lumen gain (straight line with diamond). Late lumen loss did not differ with or without stent, resulting in a significantly higher MLD of the stent group at follow-up.
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Figure 3 Analysis according to treatment. Stent implantation resulted in a significant rightward shift of the MLD distribution indicating a larger lumen both at the end of the procedure (top) and at six-months follow-up (bottom).
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Figure 4 Analysis by intention to treat. Even by including the seven crossover patients with stenting against randomization into the PTCA group, the effect of elective stent implantation after recanalization of chronic total occlusions remained obvious.
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Figure 5 Angina class. Patients with stents had a significantly greater improvement of their CCS class (1.3 vs. 0.3 classes; p < 0.01). The PTCA group had a slightly lower anginal class pre procedure (2.0 vs 2.5, p = 0.04).
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